@misc{indiciaee300938727c2,
  title = {Office spirometer modification.},
  author = {T L Petty and B Baidwan},
  year = {1984},
  doi = {10.1378/chest.86.2.248},
  url = {https://pubmed.ncbi.nlm.nih.gov/6744964/},
  note = {Source identifier: 6744964}
}